package com.hmdp.utils;

import cn.hutool.core.bean.BeanUtil;
import com.hmdp.dto.UserDTO;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Map;
import java.util.concurrent.TimeUnit;

public class RefreshTokenInterceptor implements HandlerInterceptor {
    private final StringRedisTemplate  stringRedisTemplate;
    public RefreshTokenInterceptor(StringRedisTemplate stringRedisTemplate) {
        this.stringRedisTemplate = stringRedisTemplate;
    }

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler){
        String token = request.getHeader("authorization");
        if (token == null) {
            return true;
        }
        Map<Object, Object> usermap = stringRedisTemplate.opsForHash().entries(RedisConstants.LOGIN_USER_KEY+token);
        if (usermap.isEmpty()) {
            return true;
        }
        UserDTO user = BeanUtil.fillBeanWithMap(usermap, new UserDTO(), false);
        UserHolder.saveUser(user);
        //刷新token有效期
        stringRedisTemplate.expire(RedisConstants.LOGIN_USER_KEY+token, RedisConstants.LOGIN_USER_TTL,  TimeUnit.MINUTES);
        return true ;
    }


    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        UserHolder.removeUser();
        HandlerInterceptor.super.afterCompletion(request, response, handler, ex);
    }
}
